Tire.



'BQ F. NORCROSS.

TIRE.

APPLIOATLON FILED-JUNE 1s, 19o?.

' Patented Dec. 7, 1909.

Y felly To a-ZZ whom it may concern:

'UNiTED sTATEs .PATENT onnion.

BURT F, NORCROSS, OF WALTHAM, MSSACHUSETTS.

TIRE.

Specification of Letters Patent.

Patented Dec. 7, 1909.

Application filed .Tune 18, 1907. S-erial No. 379,575.

The present invention relates to improve-v ments in tires, and it aims to provide a device of that class designed especially for wheels of motor vehicles which shall be ex' ceedingly resilient and durable, and which, moreover, shall be constructed as to be. practically unharmed by reason of punctures in the tire cover or shoe.

'lo this end the invention resides in the provision of a series of independently formed spiral loops which are disposed within the tire cover or shoe, to maintain thelatter in distended condition, each loop being disposed transversely of the shoe and having its opposite ends fastened tol a lug formed upon or set into a steel ring fitted upon the rim of the Wheel.

The invention will be readily understood from a 'consideration of the following detailed description, and its preferred embodiment is illustrated in the accompanying drawings in which like parts are designated by corresponding reference numerals in both views.

` In the said drawings, Figure 1 is a view in elevation, partly in section, of a portion of a tire constructed in accordance with the present invention. Fig. 2 is an enlarged detail transverse section tak n on theline 2 2 of Fig. 1. A

In the drawings, 5 designates the rim or of the wheel upon which is fitted a ring 6 formed of steel'and provided upon its outer face with a longitudinally-arranged series ofupstanding lugs 7, which are either separately constructed and set into the rim, or formed by projections struck up therefrom, according1 as desired. The ends of the' ring may be fastened to each other in any preferred manner.

The jacket or shoe 8 of the tire, which may be of either the clenched or the tubular type, both of which are equally well known, is held in distended condition by a series of lndependent loops 9 disposed transversely of the tire and having their opposite ends fastened to the lugs 7 above referred to, the number of loops corresponding to the number of lugs. Eachloop is formed by a separate coil spring as shown, the lugs being located suiiieiently close to one another to permit the mutually-adjacent springs to contact with each other adjacent the points where Athey are fastened to the lugs. Owing to this construction, the springs will be prevented from having an appreciable bodily movement toward and rom each other. As will be noted by reference to Fig.,2, each lugv is furnished with two eyes or staples 9X and through which the terminalsv of the respective springs are passed. The outer extremities of the several springs bear directly against the under face-of a second ring 10, which is likewise disposed interiorly of the shoe S, said ring consisting of a strip of thin sheet. steel whose ends 4are joined together in any desired manner, the tension of the springs serving to hold the ring in lace, though it is to be understood that, itP preferred, the shoe and ring may be vulcanized or otherwise secured together. The shoe, may, in addition, be provided with a tread 1l of any preferred construction. Where the tire is of the hose-pipe type, it must be slit longitudinally upon its under face, to enable the ends of the spring loops to be engaged with the ring lugs.

From theforegoing, that the shoe will be held at all times in distended position by the spring loops and will, therefore, be to all intents, subject to no detriment by reason of small punctures.

What is claimed, is, l

'The combination with a wheel rim, of a flat ring fitted thereuponand formed with a longitudinally arranged continuous series of lugs, each provided on opposite sides with it will be apparentAv AVtons of the loops-and the inner sufce of series oftnsvesly rrnged loops located.'` the tire. Within the interorof fhe ,lire ,andf corre-gv Inf-testimony, whereof, -I-aHiX my signuspondng in number 't' the'nub' "oflgs, ture, in presence of two witnesses.

each loop being formed by a. separate hellx, l BURT F NORCROSS.

the. loops having their ends secured n the VVI'Jnesses: I L eyeseyndlya ,atpmetal Aring@mated Wilnnrll...the E OTIs `-Lei'NoRoRoss, interior. of. the treBetWeenftheonexjupory H VE4RBERTH.C01 .BURN. 

